Closure operator



Feb. 22, 1938. J. L. CARRILLO.

cLosURE OPERATOR yFilled Oct; l5.` 1935 3 Sheets-Sheet 2 Feb. 22, '1938.J. l.. CARRILLO A cLosuRE OPERATOR Filedoct. 15, 1955 s sheets-,sheet sAttorney Patented Feb. 22, 1938 UNITED STATES PATE CLU SURE OPERATQR lClaim.

This invention relates to operating devices, for doors, windows, oranalogous devices and among the objects of the invention is to provide asimple and efficient means for shifting the closure to either open orclosing position.

In accordance with the present invention, the closure operator consistsbroadly in the provision of a cylinder having a piston mounted forreciprocation therein and connected with the closure for opening andclosing the same, together with novel valve means for controlling thesupply and exhaust of air to the cylinder for reciprocating the piston.

The invention, together with the objects and advantages, will be bestunderstood from the following description taken in connection with theaccompanying drawings, wherein- Figure l is an elevational viewillustrating the application of the invention to a door.

Figure 2 is an end elevational view of the cylinder.

Figure 3 is a sectional View thru the cylinder showing the manner ofconnecting the piston with the door.

Figure 4 is a detailed sectional view on the line 4-4 of Figure 3.

Figure 5 is an end elevational view of the piston.

Figure 6 is a longitudinal, sectional view through the cylinder andpiston illustrating certain details hereinafter more fully referred to.

Figure 7 is a detailed, sectional view through the cylinder showing themeans for sealing the slot provided in the cylinder as and for thepurpose hereinafter more fully disclosed.

Figure 8 is a detailed, sectional view through a valve control for theoperator,

Figure 9 is a fragmentary side elevation view of the valve control.

In the illustrated embodiment thereof the invention is shown as appliedto a sliding door. Thus referring to the drawings in detail, it will beseen that 5 indicates generally a sliding door. In accordance with thepresent invention there is suitably mounted in the adjacent wall and theupper casing of the door opening an elongated cylinder l. Fitted on theend of the cylinder are caps 8 provided with apertured flanges 9 throughthe medium of which, and through other fastening devices I, the caps aresecured with the cylinder 9 in position.

Mounted for reciprocation within the cylinder I is a piston, consistingas shown, of a body Il having pins I2 projecting from relativelyopposite ends thereof as shown. Through the medium of the pins I2 andnuts I3 there are secured on relatively opposite ends of the body of thepiston, packing rings i5 and cup washers I5.

Suitably mounted within the respective opposite ends of the cylinder 'Iand carried by the caps 8 are rubber covered bumpers IS which limit themovement of the piston l I.

The piston body l I has formed integrally therewith a stepped lug ilhaving a sliding t in stepped grooves i8 provided in the bottom of thecylinder at opposite sides of the longitudinally extending slot i9.

Integral with the lug il is a shank 23 terminating in a dependingsubstantially U-shaped shoe or attaching member 2l. The shoe orattaching member 2i straddles an upper forward corner of the door 5 asbest shown in Figures 3 and 4, and through the medium of rivets or otherfastening devices 22 said shoe is positively secured to the door 5 fortransmitting movement of the piston to the door.

Connected to and within the respective opposite ends of the cylinder las at 23, is an elongated spring metal tape ifi that is of a width tosubstantially close the slot I9 as shown in Figure 7. The tape Ztl istrained through a suitable opening 25 provided therefor in theaforementioned lug I'I as clearly shown in Figures 4 and 5. Theperipheries of both the packing members lli and the cup washers i 5, attheir lower diametrical points, bear upon the tape Eli and hold thelatter in sealing position upon both sides or the shank 2i) and pistonbody Ii. It will be seen that pressure on the tape 2d will tend to sealthe slot I9 behind the piston H against which air pressure is exertedfor moving the piston in one direction.

Extending upwardly through one side of the door casing, and leading fromany suitable source of air supply is a pipe 26 which has an end 26aconnected with an inlet 2i on one of the caps 8. Branching from the pipe26 is a pipe 26h that is connected with an inlet 28 provided on theother of the caps 8. The caps 8 are provided with exhausts 29 and 39respectively.

Provided in the pipe end 26a, and pipe branch Zib, are manually operablevalves 3|.

Each of the valves 3i, as clearly shown in Figure 8, consists of asuitable cylindrical casing 32 in which is mounted for reciprocation asuitable valve 33, (Figure 8), normally urged in one direction throughthe medium of a spring 34. On one end the valve 33, (Figure 8), isprovided with a suitable push button or stern 35. It is thought that theoperation of the device Will be clear from the foregoing. However theoperation may bebriey'set forth as follows:

With the door in the closed position as shown in Figure 1, opening ofthe door is effected as follows. The operator presses in on the button35 of the valve 3|V associated with the pipe end 26 so that air from thesource of supply will flow from the pipe 26 through the pipe end 26ainto the cylinder 1 at the left-hand end of the cylinder and thereby acton the piston ll to move the latter towards the right. Obviously, as thepist0n moves in this direction, door 5 will move therewith in acorresponding direction'to open position. Y

With the door in an open position, it may be moved to a closed positionby the operator pressing the push-button 35 of the valve 3| Varranged inthe pipe branch 26. The air under pressure will then ow from the pipe 26through the branch 2Gb into the cylinder I at the right hand of thecylinder and thereby act on the piston Il to move the same toward theleft. Obviously as the piston Il moves in the direction for moving thedoor to a closed position, air at the left hand side of the pistonwillexhaust from the cylinder 1 through the exhaust 29, thus permittingthe piston to move freely lin the direction indicated for closing thedoor'5. In this connection it will be noted that in the opening of thedoor 5 air in the cylinder I VWill exhaust through the exhaust 30.

Having thus described the invention, what is claimed is:

In a device of the class described, a cylinder provided with anelongated slot therein, the sides of said slot being stepped inwardly, apisto-n mounted for reciprocation in said cylinder, said piston having ashank extending therefrom and operating in said slot, the sides of theshank being stepped to register with the stepped sides of the slot,means for connecting the respective ends of the cylinder with a sourceof air supply for reciprocating said piston, and means'for sealing theslot in the cylinder Without impairing the reciprocatory movement of thecylinder, said means including a ilexible tape anchored at itsrespective opposite ends to said cylinder, said tape extendinglongitudinally in said slot and said shank having an openingtherethrough accommodating said tape.

J ESUS LEAL CARRILLO.

